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Pterospermum reticulatum
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Family:
STERCULIACEAE
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Citation: Pterospermum reticulatum Wight & Arn., Prodr. 69. 1834; Hook. f., Fl. Brit. India 1: 368. 1874; Gamble, Fl. Pres. Madras 108(77). 1915; N.C. Nair & C.N. Mohanan, Journ. Econ. Tax. Bot. 2: 234. 1981; Mohanan, Fl. Quilon Dist. 94. 1984; Chandra in B.D. Sharma & Sanjappa, Fl. India 3: 451. 1993; Pandura. & V.J. Nair, Journ. Econ. Tax. Bot. 17: 183. 1993; Sasidh. et al., Bot. Stud. Med. Pl. Kerala 12, 19; Sasidh. & Sivar., Fl. Pl. Thrissur For. 67. 1996; Sivar. & Mathew, Fl. Nilambur 102. 1997; Sasidh., Fl. Periyar Tiger Reserve 37. 1998; Sasidh., Fl. Parambikulam WLS 34. 2002; Mohanan & Sivad., Fl. Agasthyamala 109. 2002; V. Chithra in P. Daniel, Fl. Kerala 1: 467. 2005; Ratheesh Narayanan, Fl. Stud. Wayanad Dist. 165. 2009.
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Malayalam Name(s):
Malayuram, Malavuram, Malaviriam
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Tamil name(s):
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English name(s):
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Description:
Trees, to 18 m high, bark 10-15 mm thick, brown mottled with green, smooth, exfoliations thin, fibrous; blaze pink-red. Leaves simple, alternate, bifarious; stipules free, lateral, cauducous; petiole 7-10 mm long, stout, tomentose; lamina 8-15 x 4-10 cm, oblong, obovate or panduriform, base obtuse, cordate, or oblique, apex acuminate, margin entire except for the dentate tip, glabrous above, cream coloured mealy tomentose with darker minute stellate hairs beneath, coriaceous; 3-5-ribbed from base, palmate, prominent, lateral nerves 5-6 pairs, pinnate, prominent, intercostae scalariform, prominent. Flowers bisexual, white, in terminal or axillary fascicles; bracteoles laciniate; calyx tubular, 5-partite; lobes lanceolate, recurved on opening, white silky within; petals 5, 2.5 cm long, obovate-oblong, spreading, smaller than calyx, deciduous; staminal column adnate to the gynophore, bearing 5 groups of 3 stamens each between staminodes; staminodes filiform; ovary superior, hairy, placed at the tip of gynophore, 5-celled, ovules 6 in each cell; stigma simple. Fruit a capsule 5-7.5 x 3-3.7 cm, obtusely angled, hard, 5 valved, brown stellate pubescent outside; seeds 4 in each cell, prominently veined, dark brown; wing papery, oblique, falcate.
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Habit:
Tree
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Flowering & Fruiting:
January-November
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District(s):
Palakkad, Idukki, Kollam, Malappuram, Thrissur, Thiruvananthapuram, Wayanad
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Medicinal:
Yes
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Habitat:
Evergreen and semi-evergreen forests
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Distribution:
Southern Western Ghats
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Aquatic:
No
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Epiphyte(s):
No
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Saprophyte:
No
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Stem parasite:
No
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Root parasite:
No
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Flower colour(s):
White
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Weed:
No
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Monocot/Dicot:
Dicotyledonous Plants
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Exotic:
No
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Garden:
No
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Edible:
No
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Vegetable:
No
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Endemic to:
Southern Western Ghats
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IUCN status:
Vulnerable (VU)
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Altitude:
500-800
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Localities:
Peechi, Vellanimala, Pamba, Velayudhankayi, Mannarappara, Pooyamkutty, Cherupuzha, Karimpuzha, Bonaccord
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